JPS578210A - Production of water-absorbing resin - Google Patents

Production of water-absorbing resin

Info

Publication number
JPS578210A
JPS578210A JP8210480A JP8210480A JPS578210A JP S578210 A JPS578210 A JP S578210A JP 8210480 A JP8210480 A JP 8210480A JP 8210480 A JP8210480 A JP 8210480A JP S578210 A JPS578210 A JP S578210A
Authority
JP
Japan
Prior art keywords
water
gel polymer
absorbing resin
aqueous solution
acrylic acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8210480A
Other languages
Japanese (ja)
Other versions
JPH0131531B2 (en
Inventor
Yasuo Yamamoto
Hiroo Iwata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toagosei Co Ltd
Original Assignee
Toagosei Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toagosei Co Ltd filed Critical Toagosei Co Ltd
Priority to JP8210480A priority Critical patent/JPS578210A/en
Publication of JPS578210A publication Critical patent/JPS578210A/en
Publication of JPH0131531B2 publication Critical patent/JPH0131531B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE: To obtain a water-absorbing resin having excellent initial absorption rate and being suitable for diapers, by adiabatically polymerizing an aqueous solution of a mixture containing acrylic acid (alkali metal salt) and a polyfunctional monomer to form a gel polymer and then drying the gel polymer.
CONSTITUTION: An acrylic acid alkali metal salt (A), acrylic acid (B) and a polyfunctional monomer (C), e.g., methylenebisacrylamide, ethylene glycol diacrylate, are mixed together so as to provide a mol ratio, A/B, of 50W95/50W5, and a mol ratio, C/A+B, of 0.01W0.5/100. Then, the resulting monomer mixture is dissolved in water to make an aqueous solution having a concentration ≥20wt%, and this aqueous solution is polymerized adiabatically in the presence of a radical polymerization catalyst to form a gel polymer. Next, the water-absorbing resin is obtained by contacting this gel polymer with methanol containing, if necessary, at most 50wt% water to remove impurities or the like and drying the gel polymer at a temperature ≥100°C.
COPYRIGHT: (C)1982,JPO&Japio
JP8210480A 1980-06-19 1980-06-19 Production of water-absorbing resin Granted JPS578210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8210480A JPS578210A (en) 1980-06-19 1980-06-19 Production of water-absorbing resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8210480A JPS578210A (en) 1980-06-19 1980-06-19 Production of water-absorbing resin

Publications (2)

Publication Number Publication Date
JPS578210A true JPS578210A (en) 1982-01-16
JPH0131531B2 JPH0131531B2 (en) 1989-06-27

Family

ID=13765100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8210480A Granted JPS578210A (en) 1980-06-19 1980-06-19 Production of water-absorbing resin

Country Status (1)

Country Link
JP (1) JPS578210A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119830U (en) * 1982-02-09 1983-08-15 松下電器産業株式会社 Selective gas permeable membrane module
JPS6160706A (en) * 1984-09-01 1986-03-28 Japan Vilene Co Ltd Highly water-absorptive resin and water-absorptive sheet
JPS6254751A (en) * 1985-06-18 1987-03-10 ザ、プロクタ−、エンド、ギヤンブル、カンパニ− Hydrogel forming polymer composition used in absorbable structure
JPH01292003A (en) * 1988-05-19 1989-11-24 Sekisui Plastics Co Ltd Purification of water-absorbable resin
JPH03174414A (en) * 1989-09-28 1991-07-29 Sanyo Chem Ind Ltd Highly water-absorbent polymer composition, its production and highly water-absorbent article consisting thereof
US5217654A (en) * 1992-01-30 1993-06-08 The C. A. Lawton Company Two-stage mat forming preforming and molding process
JP2003064125A (en) * 2001-08-28 2003-03-05 Nippon Junyaku Kk Method for separating acrylic acid polymer powder and acrylic acid polymer powder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5346389A (en) * 1976-10-07 1978-04-25 Kao Corp Preparation of self-crosslinking polymer of acrylic alkali metal salt
JPS5453165A (en) * 1977-10-05 1979-04-26 Sanyo Chem Ind Ltd Production of water absorbing resin
JPS55133413A (en) * 1979-04-06 1980-10-17 Nippon Shokubai Kagaku Kogyo Co Ltd Preparation of crosslinked alkali metal acrylate polymer
JPS5691837A (en) * 1979-12-27 1981-07-25 Nippon Shokubai Kagaku Kogyo Co Ltd Absorbing agent
JPS56136806A (en) * 1980-03-29 1981-10-26 Mitsui Petrochem Ind Ltd Storage of solid titanium catalyst component containing highly active magnesium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5346389A (en) * 1976-10-07 1978-04-25 Kao Corp Preparation of self-crosslinking polymer of acrylic alkali metal salt
JPS5453165A (en) * 1977-10-05 1979-04-26 Sanyo Chem Ind Ltd Production of water absorbing resin
JPS55133413A (en) * 1979-04-06 1980-10-17 Nippon Shokubai Kagaku Kogyo Co Ltd Preparation of crosslinked alkali metal acrylate polymer
JPS5691837A (en) * 1979-12-27 1981-07-25 Nippon Shokubai Kagaku Kogyo Co Ltd Absorbing agent
JPS56136806A (en) * 1980-03-29 1981-10-26 Mitsui Petrochem Ind Ltd Storage of solid titanium catalyst component containing highly active magnesium

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119830U (en) * 1982-02-09 1983-08-15 松下電器産業株式会社 Selective gas permeable membrane module
JPS6242737Y2 (en) * 1982-02-09 1987-11-02
JPS6160706A (en) * 1984-09-01 1986-03-28 Japan Vilene Co Ltd Highly water-absorptive resin and water-absorptive sheet
JPS6254751A (en) * 1985-06-18 1987-03-10 ザ、プロクタ−、エンド、ギヤンブル、カンパニ− Hydrogel forming polymer composition used in absorbable structure
JPH01292003A (en) * 1988-05-19 1989-11-24 Sekisui Plastics Co Ltd Purification of water-absorbable resin
JPH03174414A (en) * 1989-09-28 1991-07-29 Sanyo Chem Ind Ltd Highly water-absorbent polymer composition, its production and highly water-absorbent article consisting thereof
JPH0696619B2 (en) * 1989-09-28 1994-11-30 三洋化成工業株式会社 Super absorbent polymer composition, method for producing the same, and super absorbent article comprising the same
US5217654A (en) * 1992-01-30 1993-06-08 The C. A. Lawton Company Two-stage mat forming preforming and molding process
JP2003064125A (en) * 2001-08-28 2003-03-05 Nippon Junyaku Kk Method for separating acrylic acid polymer powder and acrylic acid polymer powder

Also Published As

Publication number Publication date
JPH0131531B2 (en) 1989-06-27

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